Spirit-level



R. s. BROWN. SPIRIT LEVEL.

(No Model.)

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UNrrn STATES PATENT OFFICE.

ROBERT S. BROWN, OF ST. ALBANS, WEST VIRGINIA.

SPIRIT-LEVEL.

SPECIFICATION forming part of Letter s Patent No. 505,937, dated October3, 1893.

Application tiled January 25,1893. Serial No. 459,682. (No model.) Y

To all whom it may concern:

Be it known that I, ROBERT S. BROWN, a citizen of the United States,residing at St. Albans, in the county of Kanawha and State of WestVirginia, have invented a new and useful Spirit-Level, of whichthe'following is a specification.

My invention relates to improvements in spirit-levels such as areemployed by carpenters, builders, masons, &c. and the object of myinvention is to pro-1 ide a device whereby a line such as employed inadjusting the timbers of a building or in lining brick-work, dac., maybe leveled, and also to provide means whereby angles of depression andelevation may be determined without the use of independent instruments.

Further objects of my invention will appear in the following descriptionand Vthe novel features thereof will be particularly pointed out in theclaims.

In the drawingsz-Figure l is a perspective View ofLmy improvedspirit-level applied in the operative position to a line. Fig. 2 is alongitudinal sectional view'of the spirit-level. Fig. 3 is a perspectiveview of the saine provided with the quadrant attachment.

Like numerals of reference indicate like parts in allthe figures of thedrawings.

1 represents a spirit-level of the ordinary construction provided at oneend with a spring-actuated hook 2, and atrthe opposite end with aVertical slot or socket 3 in which is tted a plate4 bearing a hook 5.The line 6 is engaged by said'hooks at the opposite ends ot thespirit-level, and by extending the line in opposite directions fro-n thelevel the arrangement of distant points in a horizontal plane may bedetermined. The plate 4 is"se cured in place in the slot or socket by athumbscrew 8.

9 represents a quadrant, which is adapted be-indicated by the number ofdegrees upon the quadrant.

This instrument will be of advantage not "only to carpenters, masons,&c., but to roadbuilders and engineers in the laying of conduits, &;c.

Having described my invention, what I claim isl. The combination of aspirit level provided with a terminal hook or cord-holding device, of agraduated quadrant arranged at the opposite end of the level, concentricwith said cord-holding device and provided with a correspondingcord-holding device, substantially as specified.

2. The combination with a spirit-level, of hooks attached to theopposite ends thereof, one of the hooks being carried by an adjustableplate and a line engaged by said hooks, substantially as specified.

3. In adevice of the class described, a spiritlevel provided at one endwith a spring actuated hook and at the opposite end with a slot orsocket, a graduated quadrant fitted in said slot or socket and carryinga terminal hook, and a thumb-screw to lock said plate in position,substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses. v

ROBERT S. BROWN.

Witnesses:

D. M. GRIFFITHE, Z. H. KITCHEN.

